如何在python中逐行读取文本文件

with open('example.txt', 'r') as file:
    for line in file:
        print(line.strip())  # strip()用于去除行尾的换行符

with open('example.txt', 'r') as file:
    lines = file.readlines()
    for line in lines:
        print(line.strip())

file = open('example.txt', 'r')
try:
    while True:
        line = next(file)
        print(line.strip())
except StopIteration:
    file.close()

with open('example.txt', 'r', encoding='utf-8') as file:
    for line in file:
        print(line.strip())

try:
    with open('example.txt', 'r') as file:
        for line in file:
            print(line.strip())
except FileNotFoundError:
    print("文件未找到")
except PermissionError:
    print("权限不足，无法打开文件")